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MALPEDIA_Win_Reedbed_Auto

autogenerated rule brought to you by yara-signator

MalwareReedbedMalpedia signator rulesCreative Commons Attribution-ShareAlike 4.0Compiles with YARA-X
Author
Felix Bilstein - yara-signator at cocacoding dot com
Date
2026-05-04
Modified
2026-05-18
Score / Quality
75 / 75

What this rule detects

autogenerated rule brought to you by yara-signator

Associated malware family: Reedbed.

It defines 14 patterns (0 text, 14 hex, 0 regex).

Summary generated from the rule's metadata and condition.

Rule source

win-reedbed-auto.yarCreative Commons Attribution-ShareAlike 4.0
rule MALPEDIA_Win_Reedbed_Auto : FILE
{
	meta:
		description = "autogenerated rule brought to you by yara-signator"
		author = "Felix Bilstein - yara-signator at cocacoding dot com"
		id = "2c3f1425-1a73-59f8-aed5-33df07b7a49e"
		date = "2026-05-04"
		modified = "2026-05-18"
		reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.reedbed"
		source_url = "https://github.com/malpedia/signator-rules//blob/c901f97b7df03e41917da74c2a84b04c227316c2/rules/win.reedbed_auto.yar#L1-L141"
		license_url = "N/A"
		logic_hash = "8ef64fbf6f9497b7e87f87a1a7c073da11ad69dcb2995452562b2c12f64cc930"
		score = 75
		quality = 75
		tags = "FILE"
		version = "1"
		tool = "yara-signator v0.6.0"
		signator_config = "callsandjumps;datarefs;binvalue"
		malpedia_rule_date = "20260422"
		malpedia_hash = "a182e35da64e6d71cb55f125c4d4225196523f14"
		malpedia_version = "20260504"
		malpedia_license = "CC BY-SA 4.0"
		malpedia_sharing = "TLP:WHITE"

	strings:
		$sequence_0 = { 33c9 e8???????? 488b0d???????? 488981c2140000 }
		$sequence_1 = { 33c9 ff15???????? 85c0 751e }
		$sequence_2 = { 453b03 7519 41833b40 7313 }
		$sequence_3 = { 4181ba9814000000000200 7347 4533c0 443b06 7316 418b490e }
		$sequence_4 = { 4885c0 75e9 8d4f01 4803c9 e8???????? 488bf8 }
		$sequence_5 = { 40f6c520 7412 418a01 4181482104020000 }
		$sequence_6 = { eb55 8b9d90020000 4c8d8d90020000 895e26 4533c0 66897e2a }
		$sequence_7 = { 4885c0 7425 c60000 488d742440 eb13 }
		$sequence_8 = { 8944244c 48c744243800000000 c744243051010000 488d0546980600 4889442428 }
		$sequence_9 = { 89442450 817c245000ca9a3b 723a 488d0514070600 }
		$sequence_10 = { 89442450 837c245000 753a 488d053d0e0500 }
		$sequence_11 = { 89442450 488b442428 0fb700 488d0d10da0500 }
		$sequence_12 = { 8944244c 837c244c00 753a 488d0504c00500 }
		$sequence_13 = { 8944244c 837c244c0f 0f875e010000 8b44244c 488d0d1ba4eaff }

	condition:
		7 of them and filesize < 3760128
}

Strings (14 patterns)

IdentifierTypeValueModifiers
$sequence_0hex{ 33c9 e8???????? 488b0d???????? 488981c2140000 }
$sequence_1hex{ 33c9 ff15???????? 85c0 751e }
$sequence_2hex{ 453b03 7519 41833b40 7313 }
$sequence_3hex{ 4181ba9814000000000200 7347 4533c0 443b06 7316 418b490e }
$sequence_4hex{ 4885c0 75e9 8d4f01 4803c9 e8???????? 488bf8 }
$sequence_5hex{ 40f6c520 7412 418a01 4181482104020000 }
$sequence_6hex{ eb55 8b9d90020000 4c8d8d90020000 895e26 4533c0 66897e2a }
$sequence_7hex{ 4885c0 7425 c60000 488d742440 eb13 }
$sequence_8hex{ 8944244c 48c744243800000000 c744243051010000 488d0546980600 4889442428 }
$sequence_9hex{ 89442450 817c245000ca9a3b 723a 488d0514070600 }
$sequence_10hex{ 89442450 837c245000 753a 488d053d0e0500 }
$sequence_11hex{ 89442450 488b442428 0fb700 488d0d10da0500 }
$sequence_12hex{ 8944244c 837c244c00 753a 488d0504c00500 }
$sequence_13hex{ 8944244c 837c244c0f 0f875e010000 8b44244c 488d0d1ba4eaff }

Condition

7 of them and filesize < 3760128

In plain words (Heuristic)

  • The file must be smaller than 3760128 (a cheap guard that skips large files).
  • At least 7 patterns in the rule must match.

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References

Licence & attribution

Author: Felix Bilstein - yara-signator at cocacoding dot com

Source repository: Malpedia signator rules @ c901f97b7d

Licence: Creative Commons Attribution-ShareAlike 4.0 (repository licence)

Original rule

Mirrored via YARA Forge 20260927, which prefixes rule names with the source and adds normalised meta fields.

Rule id: 2c3f1425-1a73-59f8-aed5-33df07b7a49e

Metadata

version1
toolyara-signator v0.6.0
signator_configcallsandjumps;datarefs;binvalue
malpedia_rule_date20260422
malpedia_hasha182e35da64e6d71cb55f125c4d4225196523f14
malpedia_version20260504
malpedia_licenseCC BY-SA 4.0
malpedia_sharingTLP:WHITE

Tags:FILE